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Chen JT, Yan H, Wang TT, Zhou TD, Sun WB. Di- and Tetranuclear Dysprosium Single-Molecule Magnets Bridged by Unprecedentedly Disassembled Nitrogen-Enriched Tetrazine Derivatives. Inorg Chem 2022; 61:19097-19105. [DOI: 10.1021/acs.inorgchem.2c02474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Ji-Tun Chen
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin150080, P. R. China
| | - Han Yan
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin150080, P. R. China
| | - Tian-Tian Wang
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin150080, P. R. China
| | - Teng-Da Zhou
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin150080, P. R. China
| | - Wen-Bin Sun
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin150080, P. R. China
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2
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Singh J, Panda SK, Singh AK. Recent developments in supramolecular complexes of azabenzenes containing one to four N atoms: synthetic strategies, structures, and magnetic properties. RSC Adv 2022; 12:18945-18972. [PMID: 35873336 PMCID: PMC9240818 DOI: 10.1039/d2ra03455g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 06/20/2022] [Indexed: 11/25/2022] Open
Abstract
For the last couple of decades, azabenzene-based ligands have drawn much attention from inorganic chemists due to their ability to coordinate with different metal ions to form supramolecular clusters. These azabenzenes are weak σ donors and strong π acceptors and electron-deficient. Metallogrid complexes and non-grid oligomers are well-defined supramolecular clusters, formed by appropriate chelating ligands, and can show interesting optical, magnetic, and electronic properties. Self-assembly of [n × n] metallogrid complexes is dominated by the entropic factor while the formation of oligonuclear metal ion complexes is dominated by other effects like CFSE, electrostatic factors, ligand conformational characters, etc. Herein, the present article gives an overview of six-membered heterocyclic azine-based ligands and their potential for different metal ions to form polynuclear complexes. Moreover, their temperature-dependent magnetic properties and SCO phenomena are well described and tabulated.
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Affiliation(s)
- Juhi Singh
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar Bhubaneswar 752 050 India
| | - Suvam Kumar Panda
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar Bhubaneswar 752 050 India
| | - Akhilesh Kumar Singh
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar Bhubaneswar 752 050 India
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Beagan DM, Maciulis NA, Pink M, Carta V, Huerfano IJ, Chen CH, Caulton KG. A Redox-Active Tetrazine-Based Pincer Ligand for the Reduction of N-Oxyanions Using a Redox-Inert Metal. Chemistry 2021; 27:11676-11681. [PMID: 34008888 DOI: 10.1002/chem.202101302] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Indexed: 01/01/2023]
Abstract
The reaction chemistry of the bis-tetrazinyl pyridine ligand (btzp) towards nitrogen oxyanions coordinated to zinc is studied in order to explore the reduction of the NOx - substrates with a redox-active ligand in the absence of redox activity at the metal. Following syntheses and characterization of (btzp)ZnX2 for X=Cl, NO3 and NO2 , featuring O-Zn linkage of both nitrogen oxyanions, it is shown that a silylating agent selectively delivers silyl substituents to tetrazine nitrogens, without reductive deoxygenation of NOx -1 . A new synthesis of the highly hydrogenated H4 btzp, containing two dihydrotetrazine reductants is described as is the synthesis and characterization of (H4 btzp)ZnX2 for X=Cl and NO3 , both of which show considerable hydrogen bonding potential of the dihydrotetrazine ring NH groups. The (H4 btzp)ZnCl2 complex does not bind zinc in the pincer pocket, but instead H4 btzp becomes a bridge between neighboring atoms through tetrazine nitrogen atoms, forming a polymeric chain. The reaction of AgNO2 with (H4 btzp)ZnCl2 is shown to proceed with fast nitrite deoxygenation, yielding water and free NO. Half of the H4 btzp reducing equivalents form Ag0 and thus the chloride ligand remains coordinated to the zinc metal center to yield (btzp)ZnCl2 . To compare with AgNO2 , experiments of (H4 btzp)ZnCl2 with NaNO2 result in salt metathesis between chloride and nitrite, highlighting the importance of a redox-active cation in the reduction of nitrite to NO.
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Affiliation(s)
- Daniel M Beagan
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
| | - Nicholas A Maciulis
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
| | - Maren Pink
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
| | - Veronica Carta
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
| | - I J Huerfano
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
| | - Chun-Hsing Chen
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
| | - Kenneth G Caulton
- Department of Chemistry, Indiana University, 47405, Bloomington, Indiana, USA
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Mono- and Binuclear Copper(II) and Nickel(II) Complexes with the 3,6-Bis(picolylamino)-1,2,4,5-Tetrazine Ligand. Molecules 2021; 26:molecules26082122. [PMID: 33917122 PMCID: PMC8067877 DOI: 10.3390/molecules26082122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/28/2021] [Accepted: 03/31/2021] [Indexed: 11/30/2022] Open
Abstract
Four new compounds of formulas [Cu(hfac)2(L)] (1), [Ni(hfac)2(L)] (2), [{Cu(hfac)2}2(µ-L)]·2CH3OH (3) and [{Ni(hfac)2}2(µ-L)]·2CH3CN (4) [Hhfac = hexafluoroacetylacetone and L = 3,6-bis(picolylamino)-1,2,4,5-tetrazine] have been prepared and their structures determined by X-ray diffraction on single crystals. Compounds 1 and 2 are isostructural mononuclear complexes where the metal ions [copper(II) (1) and nickel(II) (2)] are six-coordinated in distorted octahedral MN2O4 surroundings which are built by two bidentate hfac ligands plus another bidentate L molecule. This last ligand coordinates to the metal ions through the nitrogen atoms of the picolylamine fragment. Compounds 3 and 4 are centrosymmetric homodinuclear compounds where two bidentate hfac units are the bidentate capping ligands at each metal center and a bis-bidentate L molecule acts as a bridge. The values of the intramolecular metal···metal separation are 7.97 (3) and 7.82 Å (4). Static (dc) magnetic susceptibility measurements were carried out for polycrystalline samples 1–4 in the temperature range 1.9–300 K. Curie law behaviors were observed for 1 and 2, the downturn of χMT in the low temperature region for 2 being due to the zero-field splitting of the nickel(II) ion. Very weak [J = −0.247(2) cm−1] and relatively weak intramolecular antiferromagnetic interactions [J = −4.86(2) cm−1] occurred in 3 and 4, respectively (the spin Hamiltonian being defined as H = −JS1·S2). Simple symmetry considerations about the overlap between the magnetic orbitals across the extended bis-bidentate L bridge in 3 and 4 account for their magnetic properties.
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Mavragani N, Kitos AA, Brusso JL, Murugesu M. Enhancing Magnetic Communication between Metal Centres: The Role of s-Tetrazine Based Radicals as Ligands. Chemistry 2021; 27:5091-5106. [PMID: 33079452 DOI: 10.1002/chem.202004215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/19/2020] [Indexed: 12/31/2022]
Abstract
Although 1,2,4,5-tetrazines or s-tetrazines have been known in the literature for more than a century, their coordination chemistry has become increasingly popular in recent years due to their unique redox activity, multiple binding sites and their various applications. The electron-poor character of the ring and stabilization of the radical anion through all four nitrogen atoms in their metal complexes provide new aspects in molecular magnetism towards the synthesis of new high performing Single Molecule Magnets (SMMs). The scope of this review is to examine the role of s-tetrazine radical ligands in transition metal and lanthanide based SMMs and provide a critical overview of the progress thus far in this field. As well, general synthetic routes and new insights for the preparation of s-tetrazines are discussed, along with their redox activity and applications in various fields. Concluding remarks along with the limitations and perspectives of these ligands are discussed.
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Affiliation(s)
- Niki Mavragani
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| | - Alexandros A Kitos
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| | - Jaclyn L Brusso
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
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Stetsiuk O, Abhervé A, Avarvari N. 1,2,4,5-Tetrazine based ligands and complexes. Dalton Trans 2020; 49:5759-5777. [PMID: 32239040 DOI: 10.1039/d0dt00827c] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One of the most intriguing nitrogen based aromatic heterocycles is 1,2,4,5-tetrazine or s-tetrazine (TTZ) thanks to its electron acceptor character and fluorescence properties and the possibilities of functionalization in the 3 and 6 positions allowing access to various ligands. In this review we focus on the two main families of TTZ based ligands, i.e. ditopic symmetric and monotopic non-symmetric, together with their metal complexes, with a special emphasis on their solid state structures and physical properties. After a description of the most representative complexes containing unsubstituted TTZ as a ligand, symmetric TTZ ligands and complexes derived thereof are discussed in the order: 3,6-bis(2-pyridyl)-tetrazine, 3,6-bis(3-pyridyl)-tetrazine, 3,6-bis(4-pyridyl)-tetrazine, 3,6-bis(2-pyrimidyl)-tetrazine, 3,6-bis(2-pyrazinyl)-tetrazine, 3,6-bis(monopicolylamine)-tetrazine, 3,6-bis(vanillin-hydrazinyl)-tetrazine and TTZ containing carboxylic acids. Remarkable results have been obtained in recent years for metal-organic frameworks and magnetic compounds in which magnetic coupling is enhanced when the tetrazine bridge is reduced to radical anions. Non-symmetric ligands, such as dipicolylamine-TTZ and monopicolylamine-TTZ, are comparatively more recent than the symmetric ones. They allow in principle the preparation of mononuclear complexes in a controlled manner, although binuclear complexes have been isolated as well. Moreover, in the monopicolylamine-TTZ-Cl ligand, deprotonation of the amine, thanks to the electron acceptor character of TTZ, afforded a negatively charged ligand equivalent of a guanidinate.
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Affiliation(s)
- Oleh Stetsiuk
- MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 ANGERS Cedex, France.
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7
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Adhikari S, Kar D, Fröhlich R, Ghosh K. Pyridine‐Based Macrocyclic and Open Receptors for Urea. ChemistrySelect 2019. [DOI: 10.1002/slct.201902451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Suman Adhikari
- Department of ChemistryUniversity of Kalyani Kalyani- 741235 India
- Department of ChemistryGovt. Degree College, Dharmanagar, Tripura India
| | - Debasis Kar
- Department of ChemistryUniversity of Kalyani Kalyani- 741235 India
| | - Roland Fröhlich
- Institute of Organic ChemistryUniversity of Münster Corrensstrasse 40 48149 Münster, Germany
| | - Kumaresh Ghosh
- Department of ChemistryUniversity of Kalyani Kalyani- 741235 India
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8
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Dipicolylamino-methoxy-1,2,4,5-tetrazine ligand and its metal complexes: Structural and photophysical studies. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Stetsiuk O, El-Ghayoury A, Lloret F, Julve M, Avarvari N. Mononuclear and One-Dimensional Cobalt(II) Complexes with the 3,6-Bis(picolylamino)-1,2,4,5-tetrazine Ligand. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Oleh Stetsiuk
- Laboratoire MOLTECH-Anjou, UMR 6200; CNRS Université d'Angers, UFR Sciences, Bât. K; 2 Bd. Lavoisier 49045 Angers France
- Department of Inorganic Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska str. 64/13 01601 Kyiv Ukraine
| | - Abdelkrim El-Ghayoury
- Laboratoire MOLTECH-Anjou, UMR 6200; CNRS Université d'Angers, UFR Sciences, Bât. K; 2 Bd. Lavoisier 49045 Angers France
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica; Universitat de València; C/Catedrático José Beltrán 2 46980 Paterna (Valencia) Spain
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica; Universitat de València; C/Catedrático José Beltrán 2 46980 Paterna (Valencia) Spain
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou, UMR 6200; CNRS Université d'Angers, UFR Sciences, Bât. K; 2 Bd. Lavoisier 49045 Angers France
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10
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Benson CR, Fatila EM, Lee S, Marzo MG, Pink M, Mills MB, Preuss KE, Flood AH. Extreme Stabilization and Redox Switching of Organic Anions and Radical Anions by Large-Cavity, CH Hydrogen-Bonding Cyanostar Macrocycles. J Am Chem Soc 2016; 138:15057-15065. [DOI: 10.1021/jacs.6b09459] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Christopher R. Benson
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Elisabeth M. Fatila
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Semin Lee
- The
Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Matthew G. Marzo
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Maren Pink
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Michelle B. Mills
- Department
of Chemistry, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Kathryn E. Preuss
- Department
of Chemistry, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Amar H. Flood
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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11
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Samanta S, Ray S, Ghosh AB, Biswas P. 3,6-Di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz) mediated metal-free mild oxidation of thiols to disulfides in aqueous medium. RSC Adv 2016. [DOI: 10.1039/c6ra01509c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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12
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Using voltammetry to measure hydrogen-bonding interactions in non-aqueous solvents: A mini-review. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2015.11.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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13
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Nazarenko I, Pop F, Sun Q, Hauser A, Lloret F, Julve M, El-Ghayoury A, Avarvari N. Structural, photophysical and magnetic properties of transition metal complexes based on the dipicolylamino-chloro-1,2,4,5-tetrazine ligand. Dalton Trans 2015; 44:8855-66. [PMID: 25868861 DOI: 10.1039/c5dt00550g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand 3-chloro-6-dipicolylamino-1,2,4,5-tetrazine (Cl-TTZ-dipica) , prepared by the direct reaction between 3,6-dichloro-1,2,4,5-tetrazine and di(2-picolyl)-amine, afforded a series of four neutral transition metal complexes formulated as [Cl-TTZ-dipica-MCl2]2, with M = Zn(II), Cd(II), Mn(II) and Co(II), when reacted with the corresponding metal chlorides. The dinuclear structure of the isostructural complexes was disclosed by single crystal X-ray analysis, clearly indicating the formation of [M(II)-(μ-Cl)2M(II)] motifs and the involvement of the amino nitrogen atom in semi-coordination with the metal centers, thus leading to distorted octahedral coordination geometries. Moreover, the chlorine atoms, either coordinated to the metal or as a substituent on the tetrazine ring, engage respectively in specific anion-π intramolecular and intermolecular interactions with the electron-poor tetrazine units in the solid state, thus controlling the supramolecular architecture. Modulation of the emission properties is observed in the case of the Zn(II) and Cd(II) complexes when compared to the free ligand. A striking difference is observed in the magnetic properties of the Mn(II) and Co(II) complexes. An antiferromagnetic coupling takes place in the dimanganese(II) compound (J = -1.25 cm(-1)) while the Co(II) centers are ferromagnetically coupled in the corresponding complex (J = +0.55 cm(-1)), the spin Hamiltonian being defined as H = -JSA·SB.
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Affiliation(s)
- Iuliia Nazarenko
- Laboratoire MOLTECH Anjou, UMR 6200, UFR Sciences, CNRS, Université d'Angers, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France.
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Martínez-González E, Frontana C. Inner reorganization limiting electron transfer controlled hydrogen bonding: intra- vs. intermolecular effects. Phys Chem Chem Phys 2014; 16:8044-50. [PMID: 24653999 DOI: 10.1039/c3cp55106g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, experimental evidence of the influence of the electron transfer kinetics during electron transfer controlled hydrogen bonding between anion radicals of metronidazole and ornidazole, derivatives of 5-nitro-imidazole, and 1,3-diethylurea as the hydrogen bond donor, is presented. Analysis of the variations of voltammetric EpIcvs. log KB[DH], where KB is the binding constant, allowed us to determine the values of the binding constant and also the electron transfer rate k, confirmed by experiments obtained at different scan rates. Electronic structure calculations at the BHandHLYP/6-311++G(2d,2p) level for metronidazole, including the solvent effect by the Cramer/Truhlar model, suggested that the minimum energy conformer is stabilized by intramolecular hydrogen bonding. In this structure, the inner reorganization energy, λi,j, contributes significantly (0.5 eV) to the total reorganization energy of electron transfer, thus leading to a diminishment of the experimental k.
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Affiliation(s)
- Eduardo Martínez-González
- Centro de Investigación y Desarrollo Tecnológico en Electroquimica, S. Parque Tecnologico Queretaro Sanfandila Pedro Escobedo, Queretaro 76703, Mexico.
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Martínez-González E, Frontana C. Employment of electrodonating capacity as an index of reactive modulation by substituent effects: application for electron-transfer-controlled hydrogen bonding. J Org Chem 2014; 79:1131-7. [PMID: 24428630 DOI: 10.1021/jo402565t] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Evaluation of the substituent effect in reaction series is an issue of interest, as it is fundamental for controlling chemical reactivity in molecules. Within the framework of density functional theory, employment of the chemical potential, μ, and the chemical hardness, η, leads to the calculation of properties of common use, such as the electrodonating (ω(-)) and electroaccepting (ω(+)) powers, in many chemical systems. In order to examine the predictive character of the substituent effect by these indexes, a comparison between these and experimental binding constants (Kb) for binding of a series of radical anions from para- and ortho-substituted nitrobenzenes with 1,3-diethylurea in acetonitrile was performed, and fair correlations were obtained; furthermore, this strategy was suitable for all of the studied compounds, even those for which empirical approximations, such as Hammett's model, are not valid. Visual representations of substituent effects are presented by considering the local electrodonating power ω(-)(r).
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Affiliation(s)
- Eduardo Martínez-González
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica , Parque Tecnológico Querétaro Sanfandila, 76703 Pedro Escobedo, Querétaro, Mexico
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16
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Peng WT, Chang YC, Chao I. A Design Strategy for Motion Control Systems with Identical Binding Sites. Chemphyschem 2013; 14:500-4. [DOI: 10.1002/cphc.201300001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Indexed: 11/08/2022]
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Ribagnac P, Cannizzo C, Méallet-Renault R, Clavier G, Audebert P, Pansu R, Bouteiller L. Fluorescent Labeling of a Bisurea-Based Supramolecular Polymer. J Phys Chem B 2013; 117:1958-66. [DOI: 10.1021/jp307829x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Philippe Ribagnac
- Laboratoire de Chimie des Polymères—UMR
7610, Université Pierre et Marie Curie Site Le Raphaël, 3, rue Galilée 94200 Ivry-sur-Seine,
France
| | - Caroline Cannizzo
- Laboratoire de Chimie des Polymères—UMR
7610, Université Pierre et Marie Curie Site Le Raphaël, 3, rue Galilée 94200 Ivry-sur-Seine,
France
| | - Rachel Méallet-Renault
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Gilles Clavier
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Pierre Audebert
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Robert Pansu
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Laurent Bouteiller
- Laboratoire de Chimie des Polymères—UMR
7610, Université Pierre et Marie Curie Site Le Raphaël, 3, rue Galilée 94200 Ivry-sur-Seine,
France
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Parimal K, Vyas S, Chen CH, Hadad CM, Flood AH. Bond elongation in the anion radical of coordinated tetrazine ligands: A crystallographic, spectroscopic and computational study of a reduced {Re(CO)3Cl} complex. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.05.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Ding J, Li Z, Cui Z, Robertson GP, Song N, Du X, Scoles L. The preparation of 3,6-bis(3-hexylthien-2-yl)-s
-tetrazine and its conjugated polymers. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24774] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Clavier G, Audebert P. s-Tetrazines as building blocks for new functional molecules and molecular materials. Chem Rev 2010; 110:3299-314. [PMID: 20302365 DOI: 10.1021/cr900357e] [Citation(s) in RCA: 261] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gilles Clavier
- PPSM, ENS Cachan, CNRS, UniverSud, 61 av President Wilson, F-94230 Cachan, France.
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Yi C, Blum C, Liu SX, Keene TD, Frei G, Neels A, Decurtins S. Isolable Zwitterionic Pyridinio-semiquinone π-Radicals. Mild and Efficient Single-Step Access to Stable Radicals. Org Lett 2009; 11:2261-4. [PMID: 19402676 DOI: 10.1021/ol900559p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chenyi Yi
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
| | - Carmen Blum
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
| | - Shi-Xia Liu
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
| | - Tony D. Keene
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
| | - Gabriela Frei
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
| | - Antonia Neels
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
| | - Silvio Decurtins
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland, and XRD Application LAB, CSEM Centre Suisse d’Electronique et de Microtechnique SA, Jaquet-Droz 1, Case postale, CH-2002 Neuchâtel, Switzerland
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McNitt KA, Parimal K, Share AI, Fahrenbach AC, Witlicki EH, Pink M, Bediako DK, Plaisier CL, Le N, Heeringa LP, Griend DAV, Flood AH. Reduction of a Redox-Active Ligand Drives Switching in a Cu(I) Pseudorotaxane by a Bimolecular Mechanism. J Am Chem Soc 2009; 131:1305-13. [DOI: 10.1021/ja8085593] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kristy A. McNitt
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Kumar Parimal
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Andrew I. Share
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Albert C. Fahrenbach
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Edward H. Witlicki
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Maren Pink
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - D. Kwabena Bediako
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Christina L. Plaisier
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Nga Le
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Lee P. Heeringa
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Douglas A. Vander Griend
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, and Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, Michigan 49546
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Gadenne B, Semeraro M, Yebeutchou R, Tancini F, Pirondini L, Dalcanale E, Credi A. Electrochemically Controlled Formation/Dissociation of Phosphonate-Cavitand/Methylpyridinium Complexes. Chemistry 2008; 14:8964-8971. [DOI: 10.1002/chem.200800966] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yuasa J, Yamada S, Fukuzumi S. One-step versus stepwise mechanism in protonated amino acid-promoted electron-transfer reduction of a quinone by electron donors and two-electron reduction by a dihydronicotinamide adenine dinucleotide analogue. Interplay between electron transfer and hydrogen bonding. J Am Chem Soc 2008; 130:5808-20. [PMID: 18386924 DOI: 10.1021/ja8001452] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Semiquinone radical anion of 1-(p-tolylsulfinyl)-2,5-benzoquinone (TolSQ(*-)) forms a strong hydrogen bond with protonated histidine (TolSQ(*-)/His x 2 H(+)), which was successfully detected by electron spin resonance. Strong hydrogen bonding between TolSQ(*-) and His x 2 H(+) results in acceleration of electron transfer (ET) from ferrocenes [R2Fc, R = C5H5, C5H4(n-Bu), C5H4Me] to TolSQ, when the one-electron reduction potential of TolSQ is largely shifted to the positive direction in the presence of His x 2 H(+). The rates of His x 2 H(+)-promoted ET from R2Fc to TolSQ exhibit deuterium kinetic isotope effects due to partial dissociation of the N-H bond in His x 2 H(+) at the transition state, when His x 2 H(+) is replaced by the deuterated compound (His x 2 D(+)-d6). The observed deuterium kinetic isotope effect (kH/kD) decreases continuously with increasing the driving force of ET to approach kH/kD = 1.0. On the other hand, His x 2 H(+) also promotes a hydride reduction of TolSQ by an NADH analogue, 9,10-dihydro-10-methylacridine (AcrH2). The hydride reduction proceeds via the one-step hydride-transfer pathway. In such a case, a large deuterium kinetic isotope effect is observed in the rate of the hydride transfer, when AcrH2 is replaced by the dideuterated compound (AcrD2). In sharp contrast to this, no deuterium kinetic isotope effect is observed, when His x 2 H(+) is replaced by His x 2 D(+)-d6. On the other hand, direct protonation of TolSQ and 9,10-phenanthrenequinone (PQ) also results in efficient reductions of TolSQH(+) and PQH(+) by AcrH2, respectively. In this case, however, the hydride-transfer reactions occur via the ET pathway, that is, ET from AcrH2 to TolSQH(+) and PQH(+) occurs in preference to direct hydride transfer from AcrH2 to TolSQH(+) and PQH(+), respectively. The AcrH2(*+) produced by the ET oxidation of AcrH2 by TolSQH(+) and PQH(+) was directly detected by using a stopped-flow technique.
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Affiliation(s)
- Junpei Yuasa
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency, Suita, Osaka 565-0871, Japan
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